ProMaxx FOR85XN Replacement Cylinder Head

Product Options
Model Year:
2003-2007 Ford 6.0L Powerstroke
ProMaxx Performance
$5 Price Beat Guarantee
The ProMaxx Performance Cylinder Heads are high quality replacements for your 2003-2007 Ford 6.0L Powerstroke. Built with thicker castings in crack prone areas, these heads undergo extensive testing and quality control to ensure that you receive the best product possible.

ProMaxx performs the following tests and procedures: All fuel rails are drilled and checked, All heads are push rod clearanced, glow plugs and injectors are test fit, all recession depths are checked, all heads are pressure tested, all holes are tapped including glow plug threads and each head gets an in-house valve job. 

Sold individually as a complete cylinder head with valves, valve seals, springs, retainers and locks, these new castings are sold without a core charge and come ready to install. Sold individually. 


  • New Casting
  • Improved Casting In "Problem Areas" 
  • Available For 18MM & 20MM Dowels
  • No Core Charge!
  • Sold Individually
Product Options:
18MM - FOR850N
20MM - FOR851N

Customer Reviews - Include your order number for a chance to win a $100 GiftCard

(115 Ratings, 1 Review) Average Rating:
Great priduct
Buzbee auto repair (Bay minette al) 7/28/2015 11:03 AM
Great craftsmanship and high quality .Very good upgrade over stock heads and very affordable